Method for storing underground ecologically dangerous...

G - Physics – 21 – F

Patent

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Details

G21F 9/34 (2006.01) G21F 9/24 (2006.01)

Patent

CA 2557007

The invention relates to disposing ecologically hazardous agents. The inventive method for the underground storage of ecologically hazardous agents consists in storing caissons containing stored items in deep wells and/or shafts. The inventive device for the underground storage of ecologically hazardous agents consists of an underground bin (1) provided with a transfer device (2) which is disposed therein above the wellhead (3) and a top well section (4). Said device also comprises a casing pipe (10) provided with caissons (12) arranged therein and containing the stored items (27) and a lower caisson (21). Said caissons (12, 21) have walls (7), gas areas (16) and top lids (8) provided with holes (26) which are tightly jointed with sparge pipes (9). The lower end of the pipes (9) is disposed prior to the lower lid (20) of the caissons (12), which is provided with holes (28). The caisson (21) comprises a bearing rod (23) provided with a hydraulic damper (22). A technological pipe column (33), which comprises pipe channels (32) terminated in the bottom of the casing pipe (10) and gas channels (29) provided with angular holes (30) for supplying gas to the lower area of a gas blowdown unit (24) and intermediate areas (14), is disposed inside said casing pipe (10 provided with a heat insulating liner (31). The well has the top section of the storage well (4), the top level of caissons (5) and a reference well filling level for the caissons (6).

La présente invention relève du domaine de l'élimination de matières dangereuses pour l'environnement et concerne en particulier un procédé de stockage souterrain de matières dangereuses, lequel procédé consiste à stocker des caissons renfermant des objets de stockage dans des trous de forage profonds et/ou des puits de mine. Le dispositif de stockage de matières dangereuses pour l'environnement de cette invention comprend un conteneur souterrain (1) comportant un appareil de sas (2) au dessus du débouché (3) et une section de puits supérieure (4). Ce dispositif comprend également un tuyau de cuvelage (10) dans lequel sont disposés des caissons (12) contenant les objets de stockage (27) et un caisson inférieur (21). Ces caissons (12, 21) comportent des parois (7), des zones de gaz (16) et des couvercles supérieurs (8) à orifices qui sont hermétiquement raccordés à des tubes barboteurs (9). L'extrémité inférieure des tubes (9) est placée devant le couvercle inférieur (20) des caissons (12), lequel couvercle inférieur comporte lui aussi des orifices (28). Le caisson (21) comprend une tige d'appui (23) munie d'un amortisseur hydraulique (22). A l'intérieur dudit tuyau de cuvelage (10) se trouve une colonne tubulaire technologique (33) comprenant des passages tubulaires (32) aboutissant dans le fond du tuyau de cuvelage (10) ainsi que des passages de gaz (29) dotés d'orifices angulaires (30) servant à acheminer le gaz vers la zone inférieure d'une unité de soufflage de gaz (24) et des zones intermédiaires (14). Ce tuyau de cuvelage (10) comporte également un revêtement d'isolation thermique (31). Le trou de forage comprend une section supérieure de trou de stockage (4), un niveau supérieur des caissons (5) et un niveau de remplissage du trou de référence pour les caissons (6).

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